Car won't stay running

It very well could be a carb issue. I'm curious if this happened when the car was at full operating temperature? It's always possible that the ignition system is acting up. My first thought was, if the engine was hot, the coil may be getting weak. What type, and how old is the coil? Could also be a ignition box issue? I'm no expert on them, just thought i'd bring it into the conversation.